Hello All. Recently purchased a 2016 Model S60D and upon looking at other threads i see there is a way to upgrade the battery to a 75Kwh. However, all the posts/mentions i am seeing regarding this upgrade are fairly old. I took it recently to a tesla service center near me for a recall issue and the tech told me since it does not appear on my upgrade portion of my tesla app i cannot receive the upgrade. Has anyone done this upgrade recently? Should i escalate my request at the service center?